This circuit was suggested by Motorola in a 1969 publication. It makes use of components of the time, but both the FET and the bipolar may be general purpose current types.
Toshibas IC Brushless Motor Drivers Toshiba offers through Mouser Electronics a broad range of...
This circuit was found in an American magazine 73 for radio amateurs of the 80s. It is an...
This sophisticated repellent uses a double 555. We find it in an American documentation from the...